It ALWAYS a good idea to buy quality equipment. You'll outgrow cheap quickly if you have any aptitude or stay with it for any appreciable amount of time. You can buy good gear like the stuff you're looking at regardless of skill level.
As mentioned above, the key is to get equipment that will help your learning curve, not hinder it so stay away from real stiff. You didn't mention what riding profile you fit - feestyle, or freeride, and that shoiuld determine the type of board you neet. Once you choode type, then be sure to size appropriately.
I'm a big fan of Ride, but haven't ridden any of their softer boards. There are lots of boards that can fit whatever style you choode. One board I'd recommend (because i demoed it last year and found it very easy to ride is the Rossi Angus Amptek.) It will also give you plenty of room to grow.